/Engine/Source/Editor/UnrealEd/Classes/Exporters/TextureExporterGeneric.h
Number of binary files to export for this object. Should be 1 in the vast majority of cases. Noted exception would be multichannel sounds which have upto 8 raw waves stored within them.
virtual int32 GetFileCount ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * Object ) const